Method test_cmpfiles_invalid_names

Lib/test/test_filecmp.py:159–170

(self)

                    "Comparing mismatched directories fails")

    def test_cmpfiles_invalid_names(self):
        # See https://github.com/python/cpython/issues/122400.
        for file, desc in [
            ('\x00', 'NUL bytes filename'),
            (__file__ + '\x00', 'filename with embedded NUL bytes'),
            ("\uD834\uDD1E.py", 'surrogate codes (MUSICAL SYMBOL G CLEF)'),
            ('a' * 1_000_000, 'very long filename'),
        ]:
            for other_dir in [self.dir, self.dir_same, self.dir_diff]:
                with self.subTest(f'cmpfiles: {desc}', other_dir=other_dir):
                    res = filecmp.cmpfiles(self.dir, other_dir, [file])
                    self.assertTupleEqual(res, ([], [], [file]))

    def test_dircmp_invalid_names(self):
        for bad_dir, desc in [